"REGISTER" instead of "NEXT" (guest checkout)

-- HikaShop version -- : 2.3.5 (Business)
-- Joomla version -- : 2.5.28
-- PHP version -- : 5.3
-- Browser(s) name and version -- : all

Backend:
I set the "button style" to "CSS" in the configuration.
I activated the "Guest" checkout option.

Frontend:
I added a product to my shopping cart and I clicked on "Proceed to Checkout".
I clicked on "Guest" in the identification section.
The button below the guest info says "REGISTER" which is wrong. It should say "NEXT" the guest mode skips the registration.

When the button style is set to normal, the button says "NEXT" which is correct.

Hi,

We don't have such issue on our end.
Do you have any override in the user views ? Especially on the view "user / registration" or "user / registration_bootstrap" ?